WATSON, TWIN, OR ONYX CAVES
The two caverns thus variously designated are on the Meramec River, 14 miles north of Salem. They are parallel to a depth of about 100 feet, being separated by only 10 or 12 feet of solid wall. The floors of both slope downward from front to rear, but not so rapidly as the roof, so that at this distance the caves apparently come to an end. But that they continue back into the hill is manifest from the appearance of the roofs. In some manner the rear portion of each has become entirely filled with earth. Probably they unite somewhere beyond this point.
Either of these caves is of ample size to make an excellent shelter for a large number of people; but they are difficult of access, and no evidence whatever could be discovered indicating occupancy.
In fact, this part of the Meramec Valley does not seem to have ever been permanently inhabited. Residents say that relics, even flint implements, are seldom found in the bottom lands; and this fact was commented on by persons who have learned how common such things are in other localities. Small, rough hematite axes, however, occur in considerable quantities throughout the region. The ore outcrops at various places and solid nodules or fragments are plentiful. Chert knives or spearheads are found scattered promiscuously; and, rarely, an object made of other stone may be picked up. Very few specimens of any description are symmetrical or carefully finished.
HOUSE MOUNDS (5)
On the Dent County infirmary farm, in Spring Creek Valley, a mile and a half south of Salem, is a group of house mounds, about 50 in number. They have not been much disturbed by cultivation; the creek and a drainage ditch have cut through several of them, but, as usual, there is nothing in the construction to show their purpose.
Two similar groups are on the Short Bend road, not far from Salem; another group on Peter Guthoerl's farm 6 miles east of Salem; and a fourth group, partly within the corporate limits of Salem, on the road to Rolla.